High-Precision c and b Masses, and QCD Coupling from Current-Current Correlators in Lattice and Continuum QCD

By Craig McNeile, C. Davies, E. Follana, K. Hornbostel, G. Peter Lepage. 2008

275 citations recorded by the source corpus.

We extend our earlier lattice-QCD analysis of heavy-quark correlators to smaller lattice spacings and larger masses to obtain new values for the c mass and QCD coupling, and, for the first time, values for the b mass: m{sub c}(3 GeV,n{sub f}=4)=0.986(6) GeV, {alpha}{sub MS}(M{sub Z},n{sub f}=5)=0.1183(7), and m{sub b}(10 GeV,n{sub f}=5)=3.617(25) GeV. These are among the most accurate determinations by any method. We check our results using a nonperturbative determination of the mass ratio m{sub b}({mu},n{sub f})/m{sub c}({mu},n{sub f}); the two methods agree to within our 1% errors and taken together imply m{sub b}/m{sub c}=4.51(4). We also update our previous analysis of {alpha}{sub MS} from Wilson loops to account for revised values for r{sub 1} and r{sub 1}/a, finding a new value {alpha}{sub MS}(M{sub Z},n{sub f}=5)=0.1184(6); and we update our recent values for light-quark masses from the ratio m{sub c}/m{sub s}. Finally, in the Appendix, we derive a procedure for simplifying and accelerating complicated least-squares fits.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d98748b557a731b6e56ee6b0fadb4e2d2b107db3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

FLAG Review 2019 (2019, methodology): “19(4)(5)(16) – HPQCD 10 [13] A ◦ ⋆ ⋆ − − 3.”
Review of lattice results concerning low-energy particle physics (2010, methodology): “The strange quark mass is computed using a precise determination of the charm quark mass, mc(mc) = 1.273(6) GeV [104, 116], whose accuracy is better than 0.5%, and a calculation of the quark mass ratio mc/ms = 11.85(16) [107], which achieves a precision slightly above 1%.”
Review of lattice results concerning low-energy particle physics (2016, methodology): “The exceptions are represented by the HPQCD 14A [5] result at N f = 2 + 1 + 1, the HPQCD 08B [152], HPQCD 10 [9] and JLQCD 15B [174] results at N f = 2 + 1, and the ETM 11F [175] result at N f = 2, where the moments method has been employed.”
Thermal bottomonium suppression at RHIC and LHC (2011, background): “2034 in accordance with recent high precision lattice measurements of the running coupling constant [66].”